Monthly Archives: April 2014
The Sun or Sol, is the star at the centre of our solar system and is responsible for the Earth’s climate and weather. The Sun is an almost perfect sphere with a difference of just 10km in diameter between the poles and the equator. The average radius of the Sun is 695,508 km (109.2 x that of the Earth) of which 20–25% is the core
Astronomers have found the first Earth-sized exoplanet within a star’s habitable zone. The planet is the closest thing yet to the coveted ‘Goldilocks’ orb that scientists have long sought — a world roughly the size of Earth orbiting a star at a distance that is just right for liquid water to exist
Exoplanets or “extrasolar planets” are planets found outside our solar system. They are designated by affixing a lowercase letter, starting from “b” towards “z” depending on order of discovery, to their parent star’s Flamsteed designation or catalogue numbers. So, most remarkable exoplanets ever discovered:
The recent blood moon had sky gazers flocking outside to see the beautiful lunar eclipse, and likely instilled a curiosity about the night sky in many. If you find yourself wanting to know more about stars, planets and other objects in our universe, all you need is a smartphone and one or two of the following free apps.
A blood red moon has been seen throughout history as a sign of impending doom. However, they are simply the result of a lunar eclipse, or when the Earth is aligned between the moon and the sun. Be they white, grey, orange, or red, a lunar eclipse is a spectacular vision. Here are several outstanding images of lunar eclipses from Earth – and beyond.
Stars are massive shining spheres of hot gas, the closest of which is our Sun. Stars are primarily made of hydrogen, smaller amounts of helium, and trace amounts of other elements. Even the most abundant of the other elements present in stars are only present in very small quantities.
Astronomers are edging closer to discovering how the universe’s most supermassive black holes form — by studying the smallest galaxies.
Stars vary from tiny and red to gigantic and blue. While small stars are abundant in the Milky Way, massive ones at least eight times the Sun’s mass are rare. Scientists have long wondered how huge stars grow to such proportions.
If life on Earth has taught us anything, it is that where you find liquid water, you generally find life. Looking at our solar system, we now have good reason to conclude that at least a handful of moons — Europa, Ganymede, Callisto, Enceladus, Titan, and possibly Triton — may harbor vast bodies of liquid water beneath their icy shells.
Discovered on March 31, 2005 by Michael Brown and his team at the Palomar Observatory, the dwarf planet, Makemake, is the third largest dwarf planet in the solar system (perhaps the largest Kuiper belt object -wikipedia), with a diameter that is about 2/3 the size of Pluto.